<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<!-- 标题 -->
		<h1>我是H1</h1>
		<hr>
		<h2>我是H2</h2>
		<hr>
		<h3>我是H3</h3>
		<hr>
		<h4>我是H4</h4>
		<hr>
		<h5>我是H5</h5>
		<hr>
		<h6>我是H6</h6>
	</body>
</html>